du bois



(No Model.)

H. M. DU BOIS.

TIEE EOE VEHICLE WHEELS.

Patented Feb. 5, 1889.

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TIRE FOR VEHICLE-WH EELS.

SPECIFICATION forming part of Letters Patent No. 397,458, dated February 5, 1889,.

Application filed November l, 1888. Serial No. 289,749. (No model.)

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Be it known that I, HOWARD M. DU lols, a citizen of the United States, residing,l in the city and county of Ihiladelphia, State of Pennsyl vani a, have invented a new and useful Improvement in Tires for Vehicle-'Wheels which improvement is fully set forth in the followin speei fieation and aecompanyin drawings.

)ly invention consists of the construction of a tire of outer and inner metallic tires wit-h rubber or other elastic material interposed between the saine, whereby the advantages of such material are obtained without subjecting' the material to Contact with the roadsurfaec, the outer tire being upset, so that fastening' bolts, screws, or other elampingr devices are obviated in connecting said outer tire with the inner one. Y

Figure l represents a section of a tire for a \'eflriel =,wl1eel embodying,` my invention. Fi 9 and 3 represeiw sections of modifications thereof.

Similar letters and numerals of reference denote eorrespomling' parts in the several igi ures .lelmringA to the drawings, A represents a tire, which is adapted to be secured to a wheel in well-l nown manner, and having' side flanges, l, formingI a cireuniferential channel, within which is a ring, B, and an exterior tire, 2, said tires bein formed of wrought-iron or steel and said ring,r of soft rubber or other elast ic material. lVhen the ring' is primarily located, its outer periphery is Hush, or approximately so, with the periphery of the :flanged tire, and the inner diameter ot' the outer ti re of such dimension as to pass freely over the periphery of the flanged tire and encircle the rubber ring. The exterior tire is then upset, and its diameter is thereby reduced, so as io compress the rubber ring and bring its inner (fliameter within the outer periphery ofthe flanges, and thus inelose the outer tire therein and prevent it frein displacement. It will be seen that the tire has the combined ad vantagres of metal and elastic material without subjecting said material to contact with the road, the tread, on the eentrary, being' metal.

lly the employment of the upsettire, which, as has been stated, has its diameter primarily reduced, so as to be less than the outer periphery of the flange l, said tire retains its position within said flanges without the use of bolts or screws, which would necessitate the perforation of the outer tire, thereby weakening' the same and oceasioning increased expense and weight of the wheel. lrlurtherinore, the lrubber ring' is iinclosed within the two tires, and thus protected from wear, and the tire is adapted to be used with either heavy or light vehieles and loads.

In Fig. 2 the outer tire is hollow or ehan ineled and receives a sole or ring', 3, of soft rubber, which may be integral with the ringI Il, or a separate piece placed thereagainst.

In Fig. 3 the exterior tread is shown in the form of round iron or steel in cross-section, and the flanges are bent inwardly, so as to clinch the rubber rin n' without, however, producing ditferent results, the ring` in each ease serving` as a cushion, which receives the impact of the exterior tire, thus renderingl the riding easy and comparatively neiseless.

Havingl thus described my invention, what I claim as new, and desire to secure by Letters Patent,

l. In a tire, an inner metallic tire and a cushion, in combination with an outer upset tire, substantially as described.

i). A ti re consisting of innermetallietire and outer upset metallic tire with an interposed cushion, the inner tire having side flanges, forming a channel receiving' said cushion and outer tire, substantially as described.

'HOlVARD M. DU BOIS.

IVitnesses:

JOHN A. WIEDERSHEIM, A. P. JENNING'S. 

